Bonna Frères, Genève. A silver open face key wind pocket watch Bonna Frères, Genève. Montre de gousset à cadran ouvert en argent (800) remontoir à clé Circa 1700 — Bonna Frères, Genève. A silver open face key wind pocket watch Bonna Frères, Genève. Montre de gousset à cadran ouvert en argent (800) remontoir à clé Circa 1700

Sign in to download a work market report (PDF) — placement, comparables, and the artist's market, generated from the record.

Estimate: €600–€800 hammer ≈ $706–$941
Result
Performance
Sale: Bonhams — Paris Watches Online, Online, Paris, avenue Hoche · 21 April 2026
Record ID: TB-2026-052730
Record: first seen 20 Jul 2026 · updated 29 Jul 2026 · source ↗
Cite this record: TB-2026-052730 — https://thebasis.art/cite/TB-2026-052730

Bonna Frères, Genève. A Silver Open Face Key Wind Pocket Watch Bonna Frères, Genève. Montre De Gousset À Cadran Ouvert En Argent, Bonna Frères, Genève. A silver open face key wind pocket watch Bonna Frères, Genève. Montre de gousset à cadran ouvert en argent (800) remontoir à clé Circa 1700. Bonhams, 21 Apr 2026, lot 16. bought in (did not sell). TheBasis.Art, TB-2026-052730.

Cite this record permanent · resolvable · quotable

Appraisal reports, insurance claims, catalogue entries and footnotes. The identifier never changes, and anyone can resolve it back to this page at https://thebasis.art/cite/TB-2026-052730.

Bonna Frères, Genève. A Silver Open Face Key Wind Pocket Watch Bonna Frères, Genève. Montre De Gousset À Cadran Ouvert En Argent, Bonna Frères, Genève. A silver open face key wind pocket watch Bonna Frères, Genève. Montre de gousset à cadran ouvert en argent (800) remontoir à clé Circa 1700. Bonhams, 21 Apr 2026, lot 16. bought in (did not sell). TheBasis.Art, TB-2026-052730.

Test the link

The citation omits the realized price because this record is not unlocked. Everything else in it is complete and permanent.

From the same sale Paris Watches Online · Apr 2026

Lot	Artist	Estimate
Courvoisier. A fine and rare full hunter key wind dual time calendar …	Courvoisier. A Fine And Rare Full Hunter Key Wind Dual Time Calendar Pocket Watch Courvoisier. Montre De Gousset À Clapet En Argent	€1,500–€2,000
Girard. A fine and rare silver full hunter key wind dual time calenda…	Girard. A Fine And Rare Silver Full Hunter Key Wind Dual Time Calendar Pocket Watch Girard. Montre De Gousset À Clapet En Argent	€2,000–€3,000
Breguet & Fils. A silver open face key wind repeating pocket watch Br…	Breguet & Fils. A Silver Open Face Key Wind Repeating Pocket Watch Breguet & Fils. Montre De Gousset En Argent	€2,000–€3,000
Helvetia. Montre bracelet en plaqué chrome mouvement mécanique Circa 1920	Helvetia. A Chrome Plated Manual Wind Wristwatch	€1,800–€2,200
Cartier x Concord Watch Co. Montre bracelet en plaqué or jaune mouvem…	Cartier X Concord Watch Co. A Gold Plated Manual Wind Wristwatch	€1,000–€1,500
Piaget. A lady's 18K white gold manual wind wristwatch Piaget. Montre…	Piaget. A Lady's 18k White Gold Manual Wind Wristwatch Piaget. Montre Bracelet De Dame En Or Blanc 18k	€2,000–€3,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Dynamic, Circa 1970	$801	Bonhams, Apr 2024
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Dynamic, Ref: 166.0310, Circa 1990		Bonhams, Feb 2025
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Constellation 'Jumbo', Ref: 168.0063/368.0858, Circa 1975		Bonhams, Jul 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Conquest, Ref: 1529-1, Circa 1969		Bonhams, Mar 2025
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Ref: 7050, Purchased 22nd January 2005		Bonhams, May 2023
Rolex. A Stainless Steel Automatic Bracelet Watch	Seamaster, Ref: 2767-4SC, Circa 1952		Bonhams, Jan 2025
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Omega. Montre bracelet en acier avec date mouvement automati		Bonhams, Dec 2023
Heuer. A Stainless Steel Automatic Calendar Wristwatch	Seamaster, Ref: 166010, Circa 1970		Bonhams, May 2022

The closest sold results by price, artist, and medium — the appraiser's comp set, generated from the corpus. All figures converted to USD at current reference rates.